Regulator of G-protein signalling 2 mRNA is differentially expressed in mammary epithelial subpopulations and over-expressed in the majority of breast cancers
2007

RGS2 Gene Expression in Breast Cancer

Sample size: 56 publication 10 minutes Evidence: high

Author Information

Author(s): Matthew J Smalley, Marjan Iravani, Maria Leao, Anita Grigoriadis, Howard Kendrick, Tim Dexter, Kerry Fenwick, Joseph L Regan, Kara Britt, Sarah McDonald, Christopher J Lord, Alan MacKay, Alan Ashworth

Primary Institution: Breakthrough Breast Cancer Research Centre, The Institute of Cancer Research

Hypothesis

The study aims to identify differentially expressed genes in mammary epithelial cell populations and their relationship to breast cancer.

Conclusion

RGS2 is over-expressed in the majority of breast cancers, suggesting it may be a significant therapeutic target.

Supporting Evidence

  • RGS2 was found to be highly expressed in myoepithelial cells.
  • RGS2 expression was significantly higher in breast cancer samples compared to normal cells.
  • Functional analysis showed RGS2 modulates oxytocin receptor signalling.

Takeaway

The study found that a gene called RGS2 is found in higher amounts in breast cancer cells compared to normal cells, which could help in developing new treatments.

Methodology

Gene expression microarray analysis was used to profile freshly isolated primary mouse mammary epithelial cells and confirm findings with quantitative real-time RT-PCR.

Potential Biases

Potential bias in sample selection and analysis methods could affect the results.

Limitations

The study primarily focuses on mouse models, which may not fully represent human breast cancer biology.

Participant Demographics

The study involved mouse mammary epithelial cells and human breast cancer samples.

Statistical Information

P-Value

3.77 × 10-10

Confidence Interval

95%

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1186/bcr1834

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